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Sulz
Silverstone


Joined: 13 Feb 2015
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PostPosted: Sun Nov 04, 2018 8:53 pm    Post subject: Battery charger Reply with quote

I don’t use my 911 frequently over winter so it can be parked up weeks at a time. Would like to buy a trickle charge to look after the battery. Looking at the CTek . Any model in particular that gets recommended?

I assume the 12v are not live 24/7 as I have a dash cam plugged into the passenger footwell which automatically turns off then the 12v turns off which it does so after 20 minutes or so. Are all of them like this or are some live?

Finally with the ctek kit want to get the wired in kit so just assume connect one End to positive terminal and the other to the ground bolt?

Thanks
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MJA911
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PostPosted: Sun Nov 04, 2018 9:40 pm    Post subject: Reply with quote

Use a CTEK MXS 5.0 on mine, via the 12v/cig socket in the centre console. It has multiple modes - Normal, AGP (for stop/start) and recon. Works fine.
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Sulz
Silverstone


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PostPosted: Mon Nov 05, 2018 12:17 pm    Post subject: Reply with quote

I wasn't aware the one in the central arm rest was live 24/7.

Will get the CTEK and a 12v cig adapter

thanks
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Ken White
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2008 Porsche 997 Carrera 4S

PostPosted: Mon Nov 05, 2018 2:06 pm    Post subject: Reply with quote

Yes I have a cig lighter adapter and works fine. A lot less hassle than trying to fish a wire from under the bonnet. thumbsup
 
  
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blackram
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Joined: 11 Jul 2017
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PostPosted: Mon Nov 05, 2018 9:17 pm    Post subject: Reply with quote

I have an early 991.1 S and the only permanently live socket is in the side of the passenger footwell. Initially the sockets all stay powered after ignition is turned off but all the others switch off after a short time. Of course it may be different for later models - mine is one of the original 40 UK launch vehicles in 2011.
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Sulz
Silverstone


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PostPosted: Tue Nov 06, 2018 8:02 am    Post subject: Reply with quote

Have ordered the 12v adapter . All arriving today and will experiement with the sockets and hope one of them is permanent live.

Failing that will go for the battery connectors.

Do you guys leave it charged up weeks on end or give the battary a break inbetween?
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T8
General
General


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PostPosted: Tue Nov 06, 2018 8:55 am    Post subject: Reply with quote

Sulz wrote:


Do you guys leave it charged up weeks on end or give the battary a break inbetween?



CTEKs are designed to be left on all the time.
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Sulz
Silverstone


Joined: 13 Feb 2015
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PostPosted: Tue Nov 06, 2018 3:13 pm    Post subject: Reply with quote

That makes life easier.

Planning to wash car, fill the tank connect up CTEK and put a winter cover on.

Anything else to do whilst it hibernates?

Will put it away from Dec to end of Feb.
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patpending
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Joined: 11 Jun 2018
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PostPosted: Tue Nov 06, 2018 4:11 pm    Post subject: Reply with quote

Sulz wrote:
That makes life easier.

Planning to wash car, fill the tank connect up CTEK and put a winter cover on.

Anything else to do whilst it hibernates?

Will put it away from Dec to end of Feb.


Take it out every 3-4 weeks for a short run(avoid rain/salty roads if possible) and make sure it gets up to operating temp.

Run the aircon
 
  
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Sulz
Silverstone


Joined: 13 Feb 2015
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PostPosted: Wed Nov 21, 2018 10:47 am    Post subject: Reply with quote

Hi All

Have run into an issue, The earth point Porsche recommend to use is on the far left when facing the car. Battery being on the far right as its a RHD so the points are too far apart to use the CTek connections (not the clamps but the O rings you use to leave a connection hardwired in) .

From what I understand Porsche do not recommend or CTek to use the earth - Terminal on the battery,

What other point or where else can I connect it to?

Due to the car being outside, It's easier for me to plug in the charger to an outdoor point , leave the transformer in the Boot and connect to battery rather than into a 12v socket.

Many Thanks
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Magic919
Suzuka


Joined: 05 Jun 2013
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PostPosted: Wed Nov 21, 2018 6:28 pm    Post subject: Reply with quote

My CTEK leads are attached to the battery terminals.
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Sulz
Silverstone


Joined: 13 Feb 2015
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PostPosted: Thu Nov 22, 2018 8:23 am    Post subject: Reply with quote

You had any issues?

From what I have now read it seems its to prevent sparking which could ignite gasses .

But Ctek doesnt do this anyway.
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911TEL
Albert Park


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PostPosted: Thu Nov 22, 2018 9:08 am    Post subject: Reply with quote

Sulz wrote:
You had any issues?

From what I have now read it seems its to prevent sparking which could ignite gasses .

But Ctek doesnt do this anyway.


I would recommend trying to find a way to keep the Ctek unit outside the car not in the 'frunk' as you will not know if it is ok or not, or if it is overheating which they don't ( often do ....)
Maybe fab up some type of frame to keep it off the ground, its rated for outside anyway so can in theory stand an outdoor winter Insulation class: IP65
Ambient temperature: -20°C to +50°C, output power is reduced automatically at high temperatures
( I have had mine outside over winter on my RR sport , admittedly improvised with a large flowerpot over the charger and yards of 3m self amalgamating tape though)


Under Frunk method:

Buy a comfort connecter that connects to the battery using eyelets

http://www.vertar.com/ctek/CTEK-battery-charge-indicator-wire-attachment/

You can cut at one point with snips and make it suitable to squeeze under the terminal once you slacken the terminal bolt. Fit both + & - to the batter terminals like this and leave it forever. Connect your Ctek comfort lead male to the female ( stop sniggering you lot !)

You can buy a 'Ctek comfort extension lead' and run into the ' Frunk' leave lid on mechanical latch, not fully closed.

http://www.vertar.com/ctek/CTEK-battery-charger-conditioner-extension-lead/

Locate Ctek outside in safe place or in a suitable enclosure under/near ' the car. Switch on to ' Car ' mode....check after a short while that battery anf charge function is still ok.

Alternative set up is still with Ctek unit outside the car and use the extension lead and the 12v socket connection, you can close the door fully ( gently) on the lead as the seals do not compress the Ctek extension lead , check by pulling slightly once the door is closed....

The sparking comment is only relevant if you use the croc clips onto the terminals but if you do ever use these, its always advisable to switch off the Ctek prior to disconnect the clips anyway.
Modern batteries, and certainly the AGM type, do not gas off like the old type Lead acid batteries did ...
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Sulz
Silverstone


Joined: 13 Feb 2015
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PostPosted: Thu Nov 22, 2018 9:30 am    Post subject: Reply with quote

Thanks for your reply 911Tel.

I've found this on amazon

https://www.amazon.co.uk/masterplug-Weatherproof-Enclosure-Electrical-Connections/dp/B015R50C14/ref=pd_sbs_23_2?_encoding=UTF8&pd_rd_i=B015R50C14&pd_rd_r=83a68ecd-ee38-11e8-b7e3-a1b7f46d2172&pd_rd_w=R7cm5&pd_rd_wg=tvK95&pf_rd_i=desktop-dp-sims&pf_rd_m=A3P5ROKL5A1OLE&pf_rd_p=18edf98b-139a-41ee-bb40-d725dd59d1d3&pf_rd_r=1Q1FCW79SNGVGZGXCYFW&pf_rd_s=desktop-dp-sims&pf_rd_t=40701&psc=1&refRID=1Q1FCW79SNGVGZGXCYFW

A dry box which is used for outdoor connections so seems ideal for the CTEK.

I think your suggestion is a better one. I have the extension cable already so will connect both the eyelets to the battery terminals as you have suggested and then used the Dry box to House the CTek and leave under the car.

Your explantion of why it's safe to so connect to the terminals direct has put me at ease.

Thank you
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Magic919
Suzuka


Joined: 05 Jun 2013
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Location: Berkshire


PostPosted: Thu Nov 22, 2018 6:04 pm    Post subject: Reply with quote

Sulz wrote:
You had any issues?

From what I have now read it seems its to prevent sparking which could ignite gasses .

But Ctek doesnt do this anyway.


Mine are fine and I’ve never seen any sparking. Any gas will be out the vent pipe in any case.

You can snip the round type eyelets to make them easier to fit.
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dirtybarrys
Newbie


Joined: 11 Aug 2011
Posts: 30



PostPosted: Tue Nov 27, 2018 12:06 pm    Post subject: Reply with quote

I am in the same position as above requiring a trickle charger.

A couple of questions:

I assume the advice is to purchase one of the CTEK MS 5.0 units with cigar lighter attachment?

Plug into the 12v socket in the centre console or the passenger foot well?

Turn the device on with 15 mins of the car being locked to ensure it operates?

Is there a particular retailer you would advise to buy it from?

Anything else I need to make sure of, thanks and sorry for any inconvenience.

DB
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The return of Marty Wild
Albert Park


Joined: 04 Nov 2016
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PostPosted: Tue Nov 27, 2018 12:20 pm    Post subject: Reply with quote

My Ctek arrived today, is it a definite no no to have the unit in the frunk?

I guess I could have it outside the car but then it's pretty much on the street and would need covering?

Is there any modes I need to engage or just plug n play?

Also, can I tell by looking at it the condition of my battery?
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Kryton
Nürburgring


Joined: 05 Mar 2005
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PostPosted: Tue Nov 27, 2018 4:58 pm    Post subject: Reply with quote

I purchased the Porsche charger for the GT3 that plugs into the power supply on the passenger footwell and it's a great product Thumb
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Magic919
Suzuka


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PostPosted: Tue Nov 27, 2018 5:01 pm    Post subject: Reply with quote

I’ve charged mine with the CTEK in the front boot and also in the cabin of the car.
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Albert Park


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PostPosted: Tue Nov 27, 2018 5:46 pm    Post subject: Reply with quote

@ Magic919 - With the bonnet shut was that?
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